2003: Justin Timberlake performs a medley of his own hits before being joined by the delightful Kylie Minogue for a cover version of Blondie's Rapture. JT actually beatboxed halfway through but we'll put that to one side and give this a thumbs up

Billie (far left) and Tina Cousins (far right) join the B*Witched, Steps and Cleopatra (front, seated) to perform an Abba medley. We can only apologise to those of you who had wiped this from your memory. Thumbs most definitely down